This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
n | a(n) |
---|---|
1 | 4 |
2 | 20 |
3 | 105 |
4 | 576 |
5 | 3383 |
6 | 20393 |
7 | 121774 |
8 | 709169 |
9 | 4121638 |
10 | 24622476 |
11 | 150895459 |
12 | 928855881 |
13 | 5659650136 |
14 | 34105862488 |
15 | 205228295685 |
16 | 1249619101830 |
17 | 7761595614134 |
18 | 48955797807546 |
19 | 308737202532449 |
20 | 1916725035118260 |